/* ============================================================
   t05 - Bento Grid Style
   Apple-inspired bento box layout with varied card sizes,
   rounded corners, soft shadows, gradient accents.
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --xxf-primary: #2563eb;
  --xxf-accent: #8b5cf6;
  --xxf-surface: #f8fafc;
  --xxf-ink: #0f172a;
  --xxf-muted: #64748b;
  --xxf-line: #e2e8f0;
  --xxf-card: #ffffff;
  --xxf-radius: 24px;
  --xxf-shadow: 0 1px 3px rgba(0,0,0,.06), 0 6px 16px rgba(0,0,0,.04);
  --xxf-max: 1200px;

  --xxf-gradient: linear-gradient(135deg, var(--xxf-primary), var(--xxf-accent));
  --xxf-gradient-soft: linear-gradient(135deg, rgba(37,99,235,.08), rgba(139,92,246,.08));
  --xxf-shadow-hover: 0 4px 12px rgba(0,0,0,.08), 0 12px 32px rgba(0,0,0,.06);

  --xxf-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --xxf-mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;

  --xxf-space-xs: 8px;
  --xxf-space-sm: 16px;
  --xxf-space-md: 24px;
  --xxf-space-lg: 32px;
  --xxf-space-xl: 48px;
  --xxf-space-2xl: 64px;

  --xxf-text-xs: 0.75rem;
  --xxf-text-sm: 0.875rem;
  --xxf-text-base: 1rem;
  --xxf-text-lg: 1.125rem;
  --xxf-text-xl: 1.25rem;
  --xxf-text-2xl: 1.5rem;
  --xxf-text-3xl: 2rem;
  --xxf-text-4xl: 2.75rem;

  --xxf-transition: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--xxf-font);
  color: var(--xxf-ink);
  background: var(--xxf-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--xxf-primary); text-decoration: none; transition: color var(--xxf-transition); }
a:hover { color: var(--xxf-accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* --- Utility --- */
.container {
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding-inline: var(--xxf-space-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ---------- SEO Runtime Garbage Cleanup ---------- */
body[class*="template-"] :is(.container,.site-header,.header-inner,.header-brand,.site-nav,.nav-inner,.bento-grid,.bento-card,.bento-card-body,.bento-sidebar,.bento-content,.bento-section,.bento-card-hero,.bento-card-featured,.bento-card-ranking,.bento-card-list,.bento-card-tags,.bento-card-categories,.article-card,.article-card-body,.show-layout,.show-article,.show-body,.sidebar,.sidebar-card,.site-footer,.footer-inner,.footer-links,.pagination) > :where(font,ins,small,sup,time,tt,var,area,map,bdo,dfn):not([class]) { display: none !important; }
body[class*="template-"] :is(.header-search,.bento-span-4,.bento-span-6,.bento-span-8,.bento-span-12,.bento-span-3,.bento-tag,.bento-category,.bento-section-title,.article-card-img,.show-meta,.show-nav,.sidebar-card-title,.footer-bottom,.footer-copyright) > :where(font,ins,small,sup,time,tt,var,area,map,bdo,dfn):not([class]) { display: none !important; }

/* --- Site Header --- */
.site-header {
  border-bottom: 1px solid var(--xxf-line);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(255,255,255,.85);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--xxf-space-md);
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding: var(--xxf-space-sm) var(--xxf-space-md);
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--xxf-space-xs);
  font-size: var(--xxf-text-xl);
  font-weight: 700;
  color: var(--xxf-ink);
}

.header-brand span {
  background: var(--xxf-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-search {
  position: relative;
  flex: 0 1 320px;
}

.header-search input {
  width: 100%;
  padding: 10px 16px 10px 40px;
  border: 1px solid var(--xxf-line);
  border-radius: 12px;
  background: var(--xxf-surface);
  font-size: var(--xxf-text-sm);
  color: var(--xxf-ink);
  font-family: inherit;
  transition: border-color var(--xxf-transition), box-shadow var(--xxf-transition);
}

.header-search input:focus {
  outline: none;
  border-color: var(--xxf-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.header-search::before {
  content: "\1F50D";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--xxf-text-sm);
  pointer-events: none;
}

/* --- Navigation --- */
.site-nav {
  background: var(--xxf-card);
  border-bottom: 1px solid var(--xxf-line);
}

.nav-inner {
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding-inline: var(--xxf-space-md);
  display: flex;
  align-items: center;
  gap: var(--xxf-space-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.nav-inner::-webkit-scrollbar { display: none; }

.nav-inner a {
  display: inline-flex;
  align-items: center;
  padding: 12px 18px;
  font-size: var(--xxf-text-sm);
  font-weight: 500;
  color: var(--xxf-muted);
  white-space: nowrap;
  border-radius: 10px;
  transition: color var(--xxf-transition), background var(--xxf-transition);
}

.nav-inner a:hover,
.nav-inner a[aria-current] {
  color: var(--xxf-primary);
  background: var(--xxf-gradient-soft);
}

.nav-sitemap {
  margin-left: auto;
  font-size: var(--xxf-text-xs);
  color: var(--xxf-muted);
}

/* --- Bento Grid System --- */
.bento-grid {
  display: grid;
  gap: var(--xxf-space-md);
}

.bento-main {
  grid-template-columns: repeat(12, 1fr);
}

.bento-with-sidebar {
  grid-template-columns: repeat(12, 1fr);
}

/* Card base */
.bento-card {
  background: var(--xxf-card);
  border-radius: var(--xxf-radius);
  box-shadow: var(--xxf-shadow);
  overflow: hidden;
  transition: transform var(--xxf-transition), box-shadow var(--xxf-transition);
}

.bento-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--xxf-shadow-hover);
}

.bento-card-body {
  padding: var(--xxf-space-md);
}

/* Card span variants */
.bento-span-4 { grid-column: span 4; }
.bento-span-6 { grid-column: span 6; }
.bento-span-8 { grid-column: span 8; }
.bento-span-12 { grid-column: span 12; }
.bento-span-3 { grid-column: span 3; }

.bento-span-4 .bento-card-body {
  display: flex;
  flex-direction: column;
  gap: var(--xxf-space-xs);
}

.bento-span-4 .bento-card-body h3 {
  font-size: var(--xxf-text-lg);
  font-weight: 600;
  line-height: 1.4;
}

.bento-span-4 .bento-card-body h3 a {
  color: var(--xxf-ink);
  transition: color var(--xxf-transition);
}

.bento-span-4 .bento-card-body h3 a:hover {
  color: var(--xxf-primary);
}

/* Card content side (sidebar) */
.bento-sidebar {
  grid-column: span 4;
}

.bento-content {
  grid-column: span 8;
}

.bento-content > .bento-grid {
  grid-template-columns: 1fr;
}

/* --- Card Inner Layouts --- */
.bento-card-hero {
  position: relative;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-size: cover;
  background-position: center;
}

.bento-card-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,.75) 0%, transparent 60%);
}

.bento-card-hero .bento-card-body {
  position: relative;
  z-index: 1;
  color: #fff;
}

.bento-card-hero .bento-card-body h2 {
  font-size: var(--xxf-text-3xl);
  font-weight: 700;
  line-height: 1.2;
}

.bento-card-hero .bento-card-body p {
  margin-top: var(--xxf-space-xs);
  opacity: .85;
  font-size: var(--xxf-text-sm);
}

/* Featured gradient card */
.bento-card-featured {
  background: var(--xxf-gradient);
  color: #fff;
}

.bento-card-featured h3 {
  font-size: var(--xxf-text-2xl);
  font-weight: 700;
  margin-bottom: var(--xxf-space-xs);
}

.bento-card-featured p {
  opacity: .85;
  font-size: var(--xxf-text-sm);
}

/* Ranking card */
.bento-card-ranking ol {
  counter-reset: rank;
}

.bento-card-ranking li {
  counter-increment: rank;
  display: flex;
  align-items: flex-start;
  gap: var(--xxf-space-sm);
  padding: 12px 0;
  border-bottom: 1px solid var(--xxf-line);
  font-size: var(--xxf-text-sm);
}

.bento-card-ranking li:last-child { border-bottom: none; }

.bento-card-ranking li::before {
  content: counter(rank);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: var(--xxf-text-xs);
  font-weight: 700;
  background: var(--xxf-gradient-soft);
  color: var(--xxf-primary);
}

.bento-card-ranking li:nth-child(-n+3)::before {
  background: var(--xxf-gradient);
  color: #fff;
}

.bento-card-ranking a {
  color: var(--xxf-ink);
  font-weight: 500;
  line-height: 1.5;
}

.bento-card-ranking a:hover { color: var(--xxf-primary); }

/* Standard list card */
.bento-card-list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--xxf-line);
  font-size: var(--xxf-text-sm);
}

.bento-card-list li:last-child { border-bottom: none; }

.bento-card-list a {
  display: flex;
  align-items: center;
  gap: var(--xxf-space-sm);
  color: var(--xxf-ink);
}

.bento-card-list a:hover { color: var(--xxf-primary); }

.bento-card-list .thumb {
  flex-shrink: 0;
  width: 72px;
  height: 54px;
  border-radius: 10px;
  object-fit: cover;
  background: var(--xxf-surface);
}

.bento-card-list .meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.bento-card-list .meta span {
  font-size: var(--xxf-text-xs);
  color: var(--xxf-muted);
}

/* Tag / keyword cloud */
.bento-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--xxf-space-xs);
}

.bento-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: 10px;
  background: var(--xxf-gradient-soft);
  color: var(--xxf-primary);
  font-size: var(--xxf-text-xs);
  font-weight: 500;
  transition: background var(--xxf-transition), color var(--xxf-transition);
}

.bento-tag:hover {
  background: var(--xxf-gradient);
  color: #fff;
}

/* Category grid */
.bento-card-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--xxf-space-sm);
}

.bento-category {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--xxf-space-md);
  border-radius: 16px;
  background: var(--xxf-surface);
  color: var(--xxf-ink);
  font-size: var(--xxf-text-sm);
  font-weight: 500;
  text-align: center;
  transition: background var(--xxf-transition), color var(--xxf-transition), transform var(--xxf-transition);
}

.bento-category:hover {
  background: var(--xxf-gradient-soft);
  color: var(--xxf-primary);
  transform: scale(1.02);
}

/* Section heading */
.bento-section-title {
  display: flex;
  align-items: center;
  gap: var(--xxf-space-sm);
  margin-bottom: var(--xxf-space-md);
  font-size: var(--xxf-text-xl);
  font-weight: 700;
  color: var(--xxf-ink);
}

.bento-section-title::after {
  content: "";
  flex: 1;
  height: 2px;
  background: var(--xxf-gradient);
  border-radius: 2px;
  opacity: .3;
}

/* Article card for list page */
.article-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--xxf-space-md);
  background: var(--xxf-card);
  border-radius: var(--xxf-radius);
  box-shadow: var(--xxf-shadow);
  overflow: hidden;
  transition: transform var(--xxf-transition), box-shadow var(--xxf-transition);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--xxf-shadow-hover);
}

.article-card-img {
  width: 100%;
  height: 100%;
  min-height: 120px;
  object-fit: cover;
}

.article-card > a {
  display: block;
  overflow: hidden;
}

.article-card-body {
  padding: var(--xxf-space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--xxf-space-xs);
}

.article-card-body h3 {
  font-size: var(--xxf-text-lg);
  font-weight: 600;
  line-height: 1.4;
}

.article-card-body h3 a { color: var(--xxf-ink); }
.article-card-body h3 a:hover { color: var(--xxf-primary); }

.article-card-body .desc {
  font-size: var(--xxf-text-sm);
  color: var(--xxf-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-body .date {
  font-size: var(--xxf-text-xs);
  color: var(--xxf-muted);
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--xxf-space-xs);
  padding: var(--xxf-space-lg) 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: 12px;
  font-size: var(--xxf-text-sm);
  font-weight: 500;
  background: var(--xxf-card);
  color: var(--xxf-ink);
  box-shadow: var(--xxf-shadow);
  transition: background var(--xxf-transition), color var(--xxf-transition);
}

.pagination a:hover {
  background: var(--xxf-gradient);
  color: #fff;
}

/* --- Show Page (Article Detail) --- */
.show-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--xxf-space-lg);
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding: var(--xxf-space-lg) var(--xxf-space-md);
}

.show-article {
  background: var(--xxf-card);
  border-radius: var(--xxf-radius);
  box-shadow: var(--xxf-shadow);
  padding: var(--xxf-space-xl);
}

.show-article h1 {
  font-size: var(--xxf-text-3xl);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--xxf-space-md);
}

.show-meta {
  display: flex;
  align-items: center;
  gap: var(--xxf-space-sm);
  padding-bottom: var(--xxf-space-md);
  border-bottom: 1px solid var(--xxf-line);
  margin-bottom: var(--xxf-space-lg);
}

.show-meta span {
  font-size: var(--xxf-text-sm);
  color: var(--xxf-muted);
}

.show-meta a {
  color: var(--xxf-primary);
  font-weight: 500;
  font-size: var(--xxf-text-sm);
}

.show-body {
  font-size: var(--xxf-text-base);
  line-height: 1.8;
  color: var(--xxf-ink);
  word-break: break-word;
}

.show-body p {
  margin-bottom: var(--xxf-space-md);
}

.show-body img {
  border-radius: 16px;
  margin: var(--xxf-space-md) 0;
}

.show-body h2,
.show-body h3,
.show-body h4 {
  margin: var(--xxf-space-lg) 0 var(--xxf-space-sm);
  font-weight: 700;
}

.show-body ul,
.show-body ol {
  padding-left: var(--xxf-space-lg);
  margin-bottom: var(--xxf-space-md);
}

.show-body li {
  margin-bottom: var(--xxf-space-xs);
  list-style: disc;
}

.show-body ol li { list-style: decimal; }

.show-body a { color: var(--xxf-primary); text-decoration: underline; }

.show-body blockquote {
  border-left: 4px solid var(--xxf-primary);
  padding: var(--xxf-space-sm) var(--xxf-space-md);
  margin: var(--xxf-space-md) 0;
  background: var(--xxf-gradient-soft);
  border-radius: 0 12px 12px 0;
  color: var(--xxf-muted);
  font-style: italic;
}

/* Prev / next navigation */
.show-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--xxf-space-md);
  margin-top: var(--xxf-space-xl);
  padding-top: var(--xxf-space-lg);
  border-top: 1px solid var(--xxf-line);
}

.show-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--xxf-space-md);
  border-radius: 16px;
  background: var(--xxf-surface);
  color: var(--xxf-ink);
  font-size: var(--xxf-text-sm);
  transition: background var(--xxf-transition);
}

.show-nav a:hover {
  background: var(--xxf-gradient-soft);
}

.show-nav a span {
  font-size: var(--xxf-text-xs);
  color: var(--xxf-muted);
  font-weight: 500;
}

/* Sidebar */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--xxf-space-md);
}

.sidebar-card {
  background: var(--xxf-card);
  border-radius: var(--xxf-radius);
  box-shadow: var(--xxf-shadow);
  overflow: hidden;
}

.sidebar-card-title {
  padding: var(--xxf-space-md) var(--xxf-space-md) var(--xxf-space-xs);
  font-size: var(--xxf-text-base);
  font-weight: 700;
  color: var(--xxf-ink);
  display: flex;
  align-items: center;
  gap: var(--xxf-space-xs);
}

.sidebar-card-title::before {
  content: "";
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--xxf-gradient);
}

.sidebar-card ul {
  padding: var(--xxf-space-xs) var(--xxf-space-md) var(--xxf-space-md);
}

.sidebar-card li {
  padding: 10px 0;
  border-bottom: 1px solid var(--xxf-line);
  font-size: var(--xxf-text-sm);
}

.sidebar-card li:last-child { border-bottom: none; }

.sidebar-card .bento-card-tags {
  padding: var(--xxf-space-xs) var(--xxf-space-md) var(--xxf-space-md);
}

.sidebar-card li a {
  color: var(--xxf-ink);
  display: block;
  line-height: 1.5;
}

.sidebar-card li a:hover { color: var(--xxf-primary); }

/* --- Site Footer --- */
.site-footer {
  margin-top: var(--xxf-space-2xl);
  background: var(--xxf-card);
  border-top: 1px solid var(--xxf-line);
}

.footer-inner {
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding: var(--xxf-space-xl) var(--xxf-space-md) var(--xxf-space-lg);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--xxf-space-xs) var(--xxf-space-md);
  margin-bottom: var(--xxf-space-md);
  padding-bottom: var(--xxf-space-md);
  border-bottom: 1px solid var(--xxf-line);
}

.footer-links a {
  font-size: var(--xxf-text-sm);
  color: var(--xxf-muted);
}

.footer-links a:hover { color: var(--xxf-primary); }

.footer-copyright {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--xxf-space-sm);
  font-size: var(--xxf-text-xs);
  color: var(--xxf-muted);
}

/* --- Bento Section Wrapper --- */
.bento-section {
  max-width: var(--xxf-max);
  margin-inline: auto;
  padding: var(--xxf-space-lg) var(--xxf-space-md);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .show-layout {
    grid-template-columns: 1fr;
  }

  .bento-sidebar,
  .bento-content {
    grid-column: span 12;
  }

  .bento-span-3,
  .bento-span-4 {
    grid-column: span 6;
  }

  .bento-card-categories {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-card {
    grid-template-columns: 120px 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --xxf-radius: 16px;
  }

  .header-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .header-search {
    flex: 1 1 auto;
  }

  .nav-inner {
    padding-inline: var(--xxf-space-sm);
  }

  .bento-main .bento-span-3,
  .bento-main .bento-span-4,
  .bento-main .bento-span-6,
  .bento-main .bento-span-8,
  .bento-main .bento-span-12 {
    grid-column: span 12;
  }

  .bento-with-sidebar .bento-sidebar,
  .bento-with-sidebar .bento-content {
    grid-column: span 12;
  }

  .bento-card-categories {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .article-card-img {
    height: 180px;
  }

  .show-nav {
    grid-template-columns: 1fr;
  }

  .show-article {
    padding: var(--xxf-space-md);
  }

  .show-article h1 {
    font-size: var(--xxf-text-2xl);
  }

  .footer-copyright {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .bento-card-categories {
    grid-template-columns: 1fr;
  }

  .pagination {
    flex-wrap: wrap;
  }

  .bento-card-hero {
    min-height: 240px;
  }

  .bento-card-hero .bento-card-body h2 {
    font-size: var(--xxf-text-2xl);
  }
}